JanSport Big Student School Backpack (Forge Grey Endless Stripe) Material: 100% Polyster Dimension:(W)Top 36 CM/ Down 42 CM X(H) 45 CM X(D) 13 CM=(W)Top 14.17" / Down 16.53"X(H) 17.71" X(D) 5.11" Strap Length Approxmiately: 91 CM = 35.82" Outside Pocket: 5 ; Inner Pocket: 5 All Deep Demension: 29 CM = 11.41"